Back Opatija Heiligenkreuz BS Abadia de Heiligenkreuz Catalan Klášter Heiligenkreuz Czech Stift Heiligenkreuz German Monaĥejo Heiligenkreuz Esperanto Abadía de Heiligenkreuz Spanish دیر هایلیگنکروز Persian Stift Heiligenkreuz Finnish Abbaye de Heiligenkreuz French Opatija Heiligenkreuz Croatian
| Heiligenkreuz Abbey | |
|---|---|
 Aerial view of Heiligenkreuz Abbey | |
| Religion | |
| Affiliation | Roman Catholic Church |
| Ecclesiastical or organizational status | Abbey |
| Leadership | Maximilian Heim |
| Year consecrated | Abbey Church (1187) Monastery complex (1240) |
| Status | Active |
| Relics | True Cross, Crown of thorns, Otto of Freising |
| Location | |
| Location | Heiligenkreuz, Lower Austria |
  Shown within Austria  Heiligenkreuz Abbey (Lower Austria) | |
| Geographic coordinates | 48°03′18″N 16°07′52″E / 48.05510°N 16.13122°E |
| Architecture | |
| Architect(s) | Giovanni Giuliani |
| Type | Abbey |
| Style | Cistercian, Gothic, Romanesque |
| Founder | Leopold III, Margrave of Austria |
| Groundbreaking | 11 September 1133 |
| Website | |
| www | |
Heiligenkreuz Abbey (German: Stift Heiligenkreuz; English: Abbey of the Holy Cross) is a Cistercian monastery in the village of Heiligenkreuz in the southern part of the Vienna woods, c. 13 km north-west of Baden in Lower Austria. It is the oldest continuously occupied Cistercian monastery in the world.